Function Scan_setup

Scan/PS2/scan_loop.c:115–139

Setup

// Setup
inline void Scan_setup() {
	// Register Scan CLI dictionary
	CLI_registerDictionary(scanCLIDict, scanCLIDictName);

#if defined(_teensy_3_)
	// Enable interrupts for port B.
	NVIC_ENABLE_IRQ(IRQ_PORTB);

	// Set pins to input:
	PS2_PORT_PDDR &= ~(1 << PS2_CLOCK_PIN);
	PS2_PORT_PDDR &= ~(1 << PS2_DATA_PIN);
	PS2_CLOCK_PCR = PORT_PCR_MUX(1);
	PS2_DATA_PCR = PORT_PCR_MUX(1);

	// Register pin PS2_CLOCK to trigger interrupt on port B:
	// falling mask is 0x0A, see pins_teensy.c
	// 16 is location in register, not pin
	uint32_t mask = (0x0A << 16) | 0x01000000;
	__disable_irq();
	PS2_CLOCK_PCR |= mask;
	__enable_irq();
#else
#warning "Not implemented"
#endif
}


// Main Detection Loop